diff options
Diffstat (limited to 'doc/manual/nix-env.xml')
| -rw-r--r-- | doc/manual/nix-env.xml | 150 |
1 files changed, 131 insertions, 19 deletions
diff --git a/doc/manual/nix-env.xml b/doc/manual/nix-env.xml index 6106d15f4..ff005830e 100644 --- a/doc/manual/nix-env.xml +++ b/doc/manual/nix-env.xml @@ -109,8 +109,13 @@ linkend="sec-common-options" />.</para> <option>--rollback</option> operations, this flag will cause <command>nix-env</command> to print what <emphasis>would</emphasis> be done if this flag had not been - specified, without actually doing it.</para></listitem> - + specified, without actually doing it.</para> + + <para><option>--dry-run</option> also prints out which paths will + be <link linkend="gloss-substitute">substituted</link> (i.e., + downloaded) and which paths will be built from source (because no + substitute is available).</para></listitem> + </varlistentry> <varlistentry><term><option>--system-filter</option> <replaceable>system</replaceable></term> @@ -205,6 +210,14 @@ number of possible ways: <option>--preserve-installed</option> is specified.</para></listitem> + <listitem><para>If <link + linkend='opt-attr'><option>--attr</option></link> + (<option>-A</option>) is specified, the arguments are + <emphasis>attribute paths</emphasis> that select attributes from the + top-level Nix expression. This is faster than using derivation + names and unambiguous. To find out the attribute paths of available + packages, use <literal>nix-env -qaA '*'</literal>.</para></listitem> + <listitem><para>If <option>--from-profile</option> <replaceable>path</replaceable> is given, <replaceable>args</replaceable> is a set of names denoting installed @@ -280,6 +293,14 @@ installing `gcc-3.3.2'</screen> </para> +<para>To install using a specific attribute: + +<screen> +$ nix-env -i -A gcc40mips +$ nix-env -i -A xorg.xorgserver</screen> + +</para> + <para>To install all derivations in the Nix expression <filename>foo.nix</filename>: <screen> @@ -322,6 +343,25 @@ selecting the <literal>subversionWithJava</literal> attribute from the attribute set returned by calling the function defined in <filename>./foo.nix</filename>.</para> +<para>A dry-run tells you which paths will be downloaded or built from +source: + +<screen> +$ nix-env -f pkgs/top-level/all-packages.nix -i f-spot --dry-run +(dry run; not doing anything) +installing `f-spot-0.0.10' +the following derivations will be built: + /nix/store/0g63jv9aagwbgci4nnzs2dkxqz84kdja-libgnomeprintui-2.12.1.tar.bz2.drv + /nix/store/0gfarvxq6sannsdw8a1ir40j1ys2mqb4-ORBit2-2.14.2.tar.bz2.drv + /nix/store/0i9gs5zc04668qiy60ga2rc16abkj7g8-sqlite-2.8.17.drv + <replaceable>...</replaceable> +the following paths will be substituted: + /nix/store/8zbipvm4gp9jfqh9nnk1n3bary1a37gs-perl-XML-Parser-2.34 + /nix/store/b8a2bg7gnyvvvjjibp4axg9x1hzkw36c-mono-1.1.4 + <replaceable>...</replaceable></screen> + +</para> + </refsection> </refsection> @@ -343,6 +383,7 @@ attribute set returned by calling the function defined in <group choice='opt'> <arg choice='plain'><option>--lt</option></arg> <arg choice='plain'><option>--leq</option></arg> + <arg choice='plain'><option>--eq</option></arg> <arg choice='plain'><option>--always</option></arg> </group> <arg choice='plain' rep='repeat'><replaceable>args</replaceable></arg> @@ -391,6 +432,17 @@ installed.</para> </varlistentry> + <varlistentry><term><option>--eq</option></term> + + <listitem><para><emphasis>Only</emphasis> “upgrade” to derivations + that have the same version. This may not seem very useful, but it + actually is, e.g., when there is a new release of Nixpkgs and you + want to replace installed applications with the same versions + built against newer dependencies (to reduce the number of + dependencies floating around on your system).</para></listitem> + + </varlistentry> + <varlistentry><term><option>--always</option></term> <listitem><para>In addition to upgrading to newer versions, also @@ -523,21 +575,37 @@ $ nix-env -e '*' <lineannotation>(remove everything)</lineannotation></screen> <arg choice='plain'><option>--query</option></arg> <arg choice='plain'><option>-q</option></arg> </group> + <arg><option>--xml</option></arg> <group choice='opt'> <arg choice='plain'><option>--installed</option></arg> <arg choice='plain'><option>--available</option></arg> <arg choice='plain'><option>-a</option></arg> </group> - <group choice='req'> - <arg choice='plain'><option>--status</option></arg> - <arg choice='plain'><option>-s</option></arg> - <arg choice='plain'><option>--no-name</option></arg> - <arg choice='plain'><option>--compare-versions</option></arg> - <arg choice='plain'><option>-c</option></arg> - <arg choice='plain'><option>--system</option></arg> - <arg choice='plain'><option>--drv-path</option></arg> - <arg choice='plain'><option>--out-path</option></arg> - </group> + <sbr /> + <arg> + <group choice='req'> + <arg choice='plain'><option>--status</option></arg> + <arg choice='plain'><option>-s</option></arg> + </group> + </arg> + <arg> + <group choice='req'> + <arg choice='plain'><option>--attr</option></arg> + <arg choice='plain'><option>-A</option></arg> + </group> + </arg> + <arg><option>--no-name</option></arg> + <arg> + <group choice='req'> + <arg choice='plain'><option>--compare-versions</option></arg> + <arg choice='plain'><option>-c</option></arg> + </group> + </arg> + <arg><option>--system</option></arg> + <arg><option>--drv-path</option></arg> + <arg><option>--out-path</option></arg> + <arg><option>--description</option></arg> + <arg choice='plain' rep='repeat'><replaceable>names</replaceable></arg> </cmdsynopsis> </refsection> @@ -549,7 +617,10 @@ $ nix-env -e '*' <lineannotation>(remove everything)</lineannotation></screen> paths that are installed in the current generation of the active profile (<option>--installed</option>), or the derivations that are available for installation in the active Nix expression -(<option>--available</option>).</para> +(<option>--available</option>). It only prints information about +derivations whose symbolic name matches one of +<replaceable>names</replaceable>. The wildcard <literal>*</literal> +shows all derivations.</para> <para>The derivations are sorted by their <literal>name</literal> attributes.</para> @@ -598,6 +669,18 @@ user environment elements, etc. --> <variablelist> + <varlistentry><term><option>--xml</option></term> + + <listitem><para>Print the result in an XML representation suitable + for automatic processing by other tools. The root element is + called <literal>items</literal>, which contains a + <literal>item</literal> element for each available or installed + derivation. The fields discussed below are all stored in + attributes of the <literal>item</literal> + elements.</para></listitem> + + </varlistentry> + <varlistentry><term><option>--status</option></term> <term><option>-s</option></term> @@ -617,6 +700,17 @@ user environment elements, etc. --> </varlistentry> + <varlistentry><term><option>--attr</option></term> + <term><option>-a</option></term> + + <listitem><para>Print the <emphasis>attribute path</emphasis> of + the derivation, which can be used to unambiguously select it using + the <link linkend="opt-attr"><option>--attr</option> option</link> + available in commands that install derivations like + <literal>nix-env --install</literal>.</para></listitem> + + </varlistentry> + <varlistentry><term><option>--no-name</option></term> <listitem><para>Suppress printing of the <literal>name</literal> @@ -690,6 +784,15 @@ user environment elements, etc. --> </varlistentry> + <varlistentry><term><option>--description</option></term> + + <listitem><para>Print a short (one-line) description of the + derivation, if available. The description is taken from the + <literal>meta.description</literal> attribute of the + derivation.</para></listitem> + + </varlistentry> + </variablelist> </refsection> @@ -698,7 +801,7 @@ user environment elements, etc. --> <refsection><title>Examples</title> <screen> -$ nix-env -q <lineannotation>(show installed derivations)</lineannotation> +$ nix-env -q '*' <lineannotation>(show installed derivations)</lineannotation> bison-1.875c docbook-xml-4.2 firefox-1.0.4 @@ -706,30 +809,39 @@ MPlayer-1.0pre7 ORBit2-2.8.3 ... -$ nix-env -qa <lineannotation>(show available derivations)</lineannotation> +$ nix-env -qa '*' <lineannotation>(show available derivations)</lineannotation> firefox-1.0.7 GConf-2.4.0.1 MPlayer-1.0pre7 ORBit2-2.8.3 ... -$ nix-env -qas <lineannotation>(show status of available derivations)</lineannotation> +$ nix-env -qas '*' <lineannotation>(show status of available derivations)</lineannotation> -P- firefox-1.0.7 <lineannotation>(not installed but present)</lineannotation> --S GConf-2.4.0.1 <lineannotation>(not present, but there is a substitute for fast installation)</lineannotation> --S MPlayer-1.0pre3 <lineannotation>(i.e., this is not the installed MPlayer, even though the version is the same!)</lineannotation> IP- ORBit2-2.8.3 <lineannotation>(installed and by definition present)</lineannotation> ... -$ nix-env -f ./foo.nix -qa <lineannotation>(show available derivations in the Nix expression <!-- !!! <filename>-->foo.nix<!-- </filename> -->)</lineannotation> +<lineannotation>(show available derivations in the Nix expression <!-- !!! <filename>-->foo.nix<!-- </filename> -->)</lineannotation> +$ nix-env -f ./foo.nix -qa '*' foo-1.2.3 -$ nix-env -qc <lineannotation>(compare installed versions to what’s available)</lineannotation> +$ nix-env -qc '*' <lineannotation>(compare installed versions to what’s available)</lineannotation> <replaceable>...</replaceable> acrobat-reader-7.0 - ? <lineannotation>(package is not available at all)</lineannotation> autoconf-2.59 = 2.59 <lineannotation>(same version)</lineannotation> firefox-1.0.4 < 1.0.7 <lineannotation>(a more recent version is available)</lineannotation> <replaceable>...</replaceable> -</screen> + +<lineannotation>(show info about a specific package, in XML)</lineannotation> +$ nix-env -qa --xml --description firefox +<![CDATA[<?xml version='1.0' encoding='utf-8'?> +<items> + <item attrPath="0.0.firefoxWrapper" + description="Mozilla Firefox - the browser, reloaded (with various plugins)" + name="firefox-1.5.0.7" system="i686-linux" /> +</items>]]></screen> </refsection> |